The French group Total and the Algerian state-owned hydrocarbon company Sonatrach have just signed an agreement to launch the engineering studies planned for this summer for a petrochemical project in Arzew (located in western Algeria). This project will include a propane dehydrogenation unit (PDH) and a polypropylene (PP) production unit with an output capacity of 550,000 tons per year and an investment of approximately $ 1.4 billion for the two partners. It will be used to transform propane into polypropylene, a type of plastic whose demand is rising strongly.